How are mammalian fibroblasts induced to behave like stem cells (SCs)?
A.By expression of a combination of 4 transcription factors normally expressed in SCs.
B.By altering the patterns of histone modification to reflect those normally found in SCs.
C.By introduction of a diploid fibroblast nucleus into an egg cell lacking a nucleus.
D.By altering DNA methylation patterns to reflect those normally found in SCs.